x = 5
print([y%2 for y in range(6)][x])

def func(x):
    if x >= 3:
        return x
y = filter(func, (1, 2, 3, 4))
print(list(y))

def f(x):
    if x < 3:
        return x
y = filter(f, (0, 1, 2, 3, 4))
print(list(y))

def f():
    import sys
    locs = sys._getframe(1).f_locals
    setattr(locs['self'], 'xy', 4*locs['x'] + 7*locs['y'])

class A:
    def __init__(self, x, y):
        self.xy = 2*x + 3*y
        f()

a = A(2, 3)
A.xy = 99
print(a.xy)

from functools import reduce
y = reduce(lambda a, b: a + b , [1, 2, 3, 4])
print(y)

x = {1: "A", 3: "B"}
y = {2: "C", 3: "D", 4: "E"}
d = {**x, **y}
vals = sorted(d.values())
print(*vals)

c = map(lambda x: x + x, filter(lambda x: (x>3), (1, 2, 3, 4)))
print(list(c))

c = filter(lambda x: x>=3, map(lambda x: x+x, (1, 2, 3, 4)))
print(list(c))

def unpacking(x, y):
    print(x, y, end=" ")
tuple_vec = (1, 0)
dict_vec = {'x': 1, 'y': 0}
unpacking(*tuple_vec)
unpacking(**dict_vec)

x = 1
def f():
    def g():
        nonlocal x 
        print(x)
        x += 1
    return g